Class Management Help Chl4a Begin Date: 3/6/2018 12:01:00 AM-Due Date: 4/5/2018

Question

Class Management Help Chl4a Begin Date: 3/6/2018 12:01:00 AM-Due Date: 4/5/2018 11:00:00 AM End Date: 5/31/2018 11:59:00 PM (13%) Problem 1: A 0.65-kg mass oscillates according to the equation x(t 0.63 cos(7.5t), where the position ao) is measured in meters. ,,25% Part (a) what is the period, in seconds, of this mass? ag 25% Part (b) At what point during the cycle is the mass moving at it's maximum speed? At the equilibrium points in the middle of the cycle OAt the equilibrium points and at the maximum amplitudes There is not enough information to answer It will change from cycle to cycle When displacement approaches the maximum amplitude SubmittF FeedbackI give up! Feedback: 1at deduction per feedback. Hint Hints: deduction per hint. Hints remaining: -- - sa u? 25% Part (c) what is the maximum acceleration of the mass, in meters per square second? ? 25% Part (d) At what point in the cycle will it reach it's maximum acceleration?

Explanation / Answer

Part b)

x = 0.63 cos (7.5t)

x = 0.63 cos (7.5 x pi/ (2 x 7.5)) = 0.63 x cos(pi /2) = 0

So, mass will be moving at it's maximum speed at the equilibrium points in the middle of the cycle

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